Sallytail is the supposed location of the original capital, though whether or not this is true has long been lost in legend and myth. It is now mostly ruins, with a few salvage teams here or there collecting marble and other precious materials from the ruined city. There has been no indication that it is in fact anything other than a rich city.
Popular myth is that the two Primal Dragons, upon being fed to dogs, released what little power they had stored and cursed the former capital. It is thought that Logun’s tail remained, and burrowed in to the earth, never being able to fully regenerate but giving the former dragon enough power to bring death and destruction to the city. Hence the name, Sallytail.
This is of course neither proven nor disproven since the tale is thought to be buried under several feet of solid rock.